CN106862042A - A kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation and spraying method - Google Patents
A kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation and spraying method Download PDFInfo
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- CN106862042A CN106862042A CN201510928836.2A CN201510928836A CN106862042A CN 106862042 A CN106862042 A CN 106862042A CN 201510928836 A CN201510928836 A CN 201510928836A CN 106862042 A CN106862042 A CN 106862042A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
Abstract
The invention discloses a kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation and spraying method, its composition proportion mass fraction is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, the powder that the formula is made are used in spraying as bottom powder；Spraying coating process is sprayed using two-step method, in same powder room, bottom powder, then spray plane powder is sprayed first, and the powder reclaimed after spraying can be re-used, and reclaimed powder and used as flour, and it is 0-30% to reclaim powder shared mass percent in flour.The aluminium section bar produced using the fluorine carbon dust powder formulation and spraying coating process, the problems such as solving poor fluorine carbon dust spraying levelability, poor adhesive force, coating layer thickness can as little as 30 microns, coating has good outward appearance and performance, use horizontal spray-painting production line, the forward speed of section bar can reach 6m/min, be a kind of efficient, inexpensive, high performance power formulations and spraying coating process.
Description
Technical field
The present invention relates to spraying aluminum profile power formulations and spraying coating process, particularly spraying aluminum profile fluorine carbon dust powder formulation and spraying coating process.
Background technology
Powder spray have the advantages that efficiently, environmental protection, powder it is recyclable, be substitute liquid spray Perfected process.At present, in medium-and-large-sized aluminium processing enterprise, the routine application such as polyester has substantially used powdery paints；But as the fluororine-carbon coating with high-weatherability, powder coating and their application is but seldom used, on the one hand because fluorine carbon dust manufacturing technology is immature, adhesive force is poor, is on the other hand that fluorine carbon dust spraying method and technique are immature, and sprayed product defect is more, poor performance.For a long time, in plant produced, it is necessary to the product of fluororine-carbon coating still uses liquid spraying method, and during liquid spraying, solvent volatilization can cause environmental pollution, fall down waste material can not reclaim cause the wasting of resources, increase discharge of wastewater, combustable gas concentration easy generation security incident high in air.At present, fluorine carbon dust manufacturing technology have been achieved with fluorine carbon dust Spray-painted aluminum profile in large development, but large-scale production process method and technique it is still unstable, it is impossible to scale application in large-scale production process again.
In order to ensure powder utilization, spraying uniformity, the mass defect such as show-through, existing powder spray are prevented, it is particularly fluorocarbon-sprayed, aluminium section bar gait of march is general in 2.5m/min-3.5m/min, this strongly limits the spray efficiency of aluminium section bar, increased operation cost.
The content of the invention
Present invention solves the technical problem that providing a kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation and spraying coating process.
The technical scheme is that：A kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation, its composition proportion mass fraction is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, each component mass percent summation are 100%.
A kind of method of high-velocity spray aluminium section bar, comprises the following steps.
A, aluminium section bar is pre-processed, pretreatment causes that aluminium shape surface forms passivating film.
B, above-mentioned aluminium section bar is carried out to spray bottom powder, meal component proportioning mass fraction in the bottom is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, each component mass percent summation are 100%.
C, again spray plane powder, flour are sprayed using common 70%PVDF fluorine carbon dust.
D, spraying carry out solidification Combined Processing after terminating, cooling obtains fluorine carbon dust Spray-painted aluminum profile product.
Step b and step c are sprayed in same spray room, bottom powder and the mixture of flour to being scattered in spray room are reclaimed, the mixture carries out the spraying of step c as flour after being well mixed with new flour, wherein, the bottom powder of recovery and the mixture of flour account for the 0-30% of step c powder gross masses.
Pretreatment in step a includes：Sour oil removing, washing, alkaline etching, washing, neutralization, washing, sour degreasing, pure water is washed, Passivation Treatment, pure water are washed, toasted；Wherein, it is 150-220g/L, alkaline etching concentration 15-25g/L that acid removes oil concentration, neutralizes concentration 150-220g/L, sour degreasing total acidity 6-12, passivating solution slot index 6-15, pH value 1.6-2.2, and pure water washes electrical conductivity less than 100 μ s/cm after Passivation Treatment；Between 2-8 minutes, pretreatment post-passivation film thickness is between 400 microns to 1400 microns for the process time of each step.
Interval time is sprayed for 0-24 hours to restocking after step a pretreatments.
In step b, bottom powder powder outlet quantity is adjusted to 5-20g/min, magnitude of voltage 60-90KV, gas output 4-5L/s, current value 0.4-0.7 μ A；In step c, flour powder outlet quantity 30-60g/min, magnitude of voltage 60-90KV, gas output 4-6L/s, current value 0.4-0.7 μ A, aluminium section bar gait of march is 4-6m/min.
Described solidification Combined Processing refers to make coating of different nature occur physically or chemically to react by heating means, and the heating-up temperature for solidifying Combined Processing is 235-270 DEG C, and solidification recombination time is 10-25 minutes.
Step b midsole powder sprays the groundwork thickness to be formed for 3-15 microns；Flour sprays the thickness to be formed for 20-80 microns in step c.
Beneficial effects of the present invention are：Using first spray bottom powder（The low powder of fluorocarbon resin content）, then spray plane powder（70%PVDF fluorine carbon dusts）Two step spraying processes solve fluorine carbon dust spray when poor adhesive force, levelability difference the problems such as.The method is carried out in a spraying area, can effectively reduce the construction cost of spray-painting production line.Production technology described in the method is obtained in that the aluminium section bar that the coating layer thickness that performance reaches user's requirement is 20-80 microns, and aluminium section bar weatherability is provided 30 years and ensured.The method environmental protection, energy-conservation, than liquid fluorocarbon spray low cost.
Brief description of the drawings
Fig. 1 is a kind of process chart of use fluorine carbon dust high-velocity spray aluminium section bar proposed by the present invention.
Specific embodiment
The present invention provides a kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation, and its composition proportion mass fraction is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, each component mass percent summation are 100%.
Fig. 1 is general flow chart of the present invention.The present invention provides a kind of method of high-velocity spray aluminium section bar, it is characterised in that comprise the following steps.
A, aluminium section bar is pre-processed, pretreatment causes that aluminium shape surface forms passivating film.
B, above-mentioned aluminium section bar is carried out to spray bottom powder, meal component proportioning mass fraction in the bottom is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, each component mass percent summation are 100%.
C, again spray plane powder, flour are sprayed using commercially available 70%PVDF fluorine carbon dust.
D, spraying carry out solidification Combined Processing after terminating, and cool down（Room temperature）Obtain fluorine carbon dust Spray-painted aluminum profile product.
Step b and step c are sprayed in same spray room, and the bottom powder and the mixture of flour that are scattered in spray room can be reclaimed.The mixture carries out the spraying of step c as flour after being well mixed with new flour, wherein, the bottom powder of recovery and the mixture of flour account for the 0-30% of step c powder gross masses.
Pretreatment in step a includes：Sour oil removing, washing, alkaline etching, washing, neutralization, washing, sour degreasing, pure water is washed, Passivation Treatment, pure water are washed, toasted；Wherein, it is 150-220g/L, alkaline etching concentration 15-25g/L that acid removes oil concentration, neutralizes concentration 150-220g/L, sour degreasing total acidity 6-12, passivating solution slot index 6-15, pH value 1.6-2.2, and pure water washes electrical conductivity less than 100 μ s/cm after Passivation Treatment；Between 2-8 minutes, pretreatment post-passivation film thickness is between 400 microns to 1400 microns for the process time of each step.
Interval time is sprayed for 0-24 hours to restocking after step a pretreatments.
In step b, bottom powder powder outlet quantity is adjusted to 5-20g/min, magnitude of voltage 60-90KV, gas output 4-5L/s, current value 0.4-0.7 μ A；In step c, flour powder outlet quantity 30-60g/min, magnitude of voltage 60-90KV, gas output 4-6L/s, current value 0.4-0.7 μ A, aluminium section bar gait of march is 4-6m/min.
Described solidification Combined Processing refers to make coating of different nature occur physically or chemically to react by heating means, and the heating-up temperature for solidifying Combined Processing is 235-270 DEG C, and solidification recombination time is 10-25 minutes.
Step b midsole powder sprays the groundwork thickness to be formed for 3-15 microns；Flour sprays the thickness to be formed for 20-80 microns in step c.
It is below specific embodiment.
Embodiment 1.
This example manufactures fluorine carbon dusts of the 10kg as bottom powder first, and its composition quality is PVDF fluorocarbon resin 90g, acrylic acid 3300g, polyisocyanates 400g, polyester resin 6000g, styrax 60g, levelling agent 150g, and extrusion is manufactured into attritive powder after being well mixed.The aluminium section bar for needing spraying is pre-processed using passivation technology, pretreating process is：Sulfuric acid oil removing, tank liquor concentration is 150g/L, process time 8 minutes；Washing 2 minutes；Alkaline etching, tank liquor concentration 15g/L, process time is 6 minutes；Washing 2 minutes；Neutralize, tank liquor concentration 150g/L, process time 8 minutes；Washing 2 minutes；Sour degreasing, acidity 6, process time 4 minutes；Pure water is washed, the μ s/cm of pure water conductivity 60, process time 2 minutes；Passivation, slot index 6.2, pH value 1.6, process time 5 minutes；The μ s/cm of pure water conductivity 90, process time 4 minutes；Drying.Pretreatment carries out electrostatic powder spraying after terminating, and spraying process midsole powder and flour are carried out in same spray room, and spraying coating process is：Aluminium section bar pace 4.5m/min, bottom powder powder outlet quantity is adjusted to 5g/min, and magnitude of voltage is adjusted to 60KV, gas output is adjusted to 4L/s, and current value is adjusted to 0.4 μ A, and flour powder outlet quantity is adjusted to 60g/min, magnitude of voltage is adjusted to 90KV, gas output is adjusted to 6L/s, and current value is adjusted to 0.7 μ A, solidification Combined Processing is carried out after the completion of spraying, 270 DEG C of solidification temperature, 15 minutes hardening times, without separating when the bottom powder and flour for falling into recovery bin are reclaimed, recycled after recovery.The aluminium shape surface quality and coating performance of above-mentioned technique spraying are fully able to reach Standard, and coating adhesion is 0 grade, and salt fog resistance is good, and xenon lamp irradiates accelerated aging test within 2000 hours, does not produce powder phenomenon-tion；And total average 42 μm of coating layer thickness, is ordinary powder spraying 2/3, and spraying section bar efficiency improves more than 1/3, is greatly saved cost.
Embodiment 2.
The bottom powder that the present embodiment is used is same as Example 1, the flour 2 of use is made up of 30% recovery powder and 70% new powder, aluminium section bar pace 4.5m/min, pretreating process and spraying coating process are same as Example 1, after the completion of spraying, 45 μm of the total average coating thickness of Surface of profile, section material appearance quality and functional.
Embodiment 3.
This example manufactures fluorine carbon dusts of the 10kg as bottom powder first, and its composition quality is PVDF fluorocarbon resin 100g, acrylic acid 4500g, polyisocyanates 400g, polyester resin 4800g, styrax 50g, levelling agent 150g, and extrusion is manufactured into attritive powder after being well mixed.The aluminium section bar for needing spraying is pre-processed using passivation technology, pretreating process is：Sulfuric acid oil removing, tank liquor concentration is 220g/L, process time 2 minutes；Washing 4 minutes；Alkaline etching, tank liquor concentration 25g/L, process time is 2 minutes；Washing 8 minutes；Neutralize, tank liquor index 220g/L, process time 3 minutes；Washing 6 minutes；Sour degreasing, acidity 12, process time 2 minutes；Pure water is washed, the μ s/cm of pure water conductivity 80, process time 2 minutes；Passivation, slot index 15, pH value 2.2, process time 2 minutes；Pure water is washed 6 minutes；Drying.Pretreatment carries out electrostatic powder spraying after terminating, and spraying process midsole powder and flour are carried out in same spray room, and spraying coating process is：Aluminium section bar pace 6m/min, bottom powder powder outlet quantity is adjusted to 20g/min, and magnitude of voltage is adjusted to 90KV, gas output is adjusted to 5L/s, and current value is adjusted to 0.7 μ A, and flour powder outlet quantity is adjusted to 40 g/min, magnitude of voltage is adjusted to 65KV, gas output is adjusted to 4.5L/s, and current value is adjusted to 0.5 μ A, solidification Combined Processing is carried out after the completion of spraying, 235 DEG C of solidification temperature, 25 minutes hardening times, without separating when the bottom powder and flour for falling into recovery bin are reclaimed, recycled after recovery.The aluminium shape surface quality and coating performance of above-mentioned technique spraying are fully able to reach Standard, and coating adhesion is 0 grade, and salt fog resistance is good, and xenon lamp irradiates accelerated aging test within 2000 hours, does not produce powder phenomenon-tion；And average 46 μm of total coating thickness, is ordinary powder spraying 2/3, and spraying section bar efficiency improves more than 1/2, is greatly saved cost.
Embodiment 4.
This example manufactures fluorine carbon dusts of the 10kg as bottom powder first, and its composition quality is PVDF fluorocarbon resin 10g, acrylic acid 4000g, polyisocyanates 450g, polyester resin 5310g, styrax 60g, levelling agent 170g, and extrusion is manufactured into attritive powder after being well mixed.The aluminium section bar for needing spraying is pre-processed using passivation technology, pretreating process is：Sulfuric acid oil removing, tank liquor concentration is 190g/L, process time 4 minutes；Washing 4 minutes；Alkaline etching, tank liquor concentration 20g/L, process time is 4 minutes；Washing 4 minutes；Neutralize, tank liquor index 190g/L, process time 4 minutes；Washing 4 minutes；Sour degreasing, acidity 9, process time 6 minutes；Pure water is washed, the μ s/cm of pure water conductivity 33, process time 2 minutes；Passivation, slot index 10, pH value 1.9, process time 3 minutes；Pure water is washed 5 minutes；Drying.Pretreatment carries out electrostatic powder spraying after terminating, and spraying process midsole powder and flour are carried out in same spray room, and spraying coating process is：Aluminium section bar pace 5m/min, bottom powder powder outlet quantity is adjusted to 10g/min, and magnitude of voltage is adjusted to 80KV, gas output is adjusted to 4.5L/s, and current value is adjusted to 0.6 μ A, and flour powder outlet quantity is adjusted to 45 g/min, magnitude of voltage is adjusted to 80KV, gas output is adjusted to 4.5L/s, and current value is adjusted to 0.6 μ A, solidification Combined Processing is carried out after the completion of spraying, 250 DEG C of solidification temperature, 20 minutes hardening times, without separating when the bottom powder and flour for falling into recovery bin are reclaimed, directly recycle.The aluminium shape surface quality and coating performance of above-mentioned technique spraying are fully able to reach Standard, and coating adhesion is 0 grade, and salt fog resistance is good, and xenon lamp irradiates accelerated aging test within 2000 hours, does not produce powder phenomenon-tion；And average 49 μm of total coating thickness, about ordinary powder spraying 2/3, spraying section bar efficiency improves more than 1/2, is greatly saved cost.
Embodiment 5.
This example manufactures fluorine carbon dusts of the 10kg as bottom powder first, and its composition quality is PVDF fluorocarbon resin 10g, acrylic acid 4000g, polyisocyanates 500g, polyester resin 5250g, styrax 70g, levelling agent 170g, and extrusion is manufactured into attritive powder after being well mixed.The aluminium section bar for needing spraying is pre-processed using passivation technology, pretreating process is：Sulfuric acid oil removing, tank liquor concentration is 190g/L, process time 4 minutes；Washing 4 minutes；Alkaline etching, tank liquor concentration 20g/L, process time is 4 minutes；Washing 4 minutes；Neutralize, tank liquor index 190g/L, process time 4 minutes；Washing 4 minutes；Sour degreasing, acidity 9, process time 6 minutes；Pure water is washed, the μ s/cm of pure water conductivity 33, process time 2 minutes；Passivation, slot index 6, pH value 1.9, process time 3 minutes；Pure water is washed 5 minutes；Drying.Pretreatment carries out electrostatic powder spraying after terminating, and spraying process midsole powder and flour are carried out in same spray room, and spraying coating process is：Aluminium section bar pace 4m/min, bottom powder powder outlet quantity is adjusted to 10g/min, and magnitude of voltage is adjusted to 80KV, gas output is adjusted to 4.5L/s, and current value is adjusted to 0.6 μ A, and flour powder outlet quantity is adjusted to 30 g/min, magnitude of voltage is adjusted to 60KV, gas output is adjusted to 4L/s, and current value is adjusted to 0.4 μ A, solidification Combined Processing is carried out after the completion of spraying, 250 DEG C of solidification temperature, 20 minutes hardening times, without separating when the bottom powder and flour for falling into recovery bin are reclaimed, directly recycle.The aluminium shape surface quality and coating performance of above-mentioned technique spraying are fully able to reach Standard, and coating adhesion is 0 grade, and salt fog resistance is good, and xenon lamp irradiates accelerated aging test within 2000 hours, does not produce powder phenomenon-tion；And average 49 μm of total coating thickness, about ordinary powder spraying 2/3, spraying section bar efficiency improves more than 1/2, is greatly saved cost.
Claims (8)
1. a kind of high-velocity spray aluminium section bar fluorine carbon dust powder formulation, it is characterised in that its composition proportion mass fraction is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, each component mass percent summation are 100%.
2. a kind of method of high-velocity spray aluminium section bar, it is characterised in that comprise the following steps：
A, aluminium section bar is pre-processed, pretreatment causes that aluminium shape surface forms passivating film；
B, above-mentioned aluminium section bar is carried out to spray bottom powder, meal component proportioning mass fraction in the bottom is：PVDF fluorocarbon resin 0.1-1%, acrylic acid 33-45%, polyisocyanates 4-5%, polyester resin 48-60%, styrax 0.5-0.7%, levelling agent 1.5%-2%, each component mass percent summation are 100%；
C, again spray plane powder, flour are sprayed using common 70%PVDF fluorine carbon dust；
D, spraying carry out solidification Combined Processing after terminating, cooling obtains fluorine carbon dust Spray-painted aluminum profile product.
3. a kind of method of high-velocity spray aluminium section bar as claimed in claim 2, it is characterized in that, step b and step c are sprayed in same spray room, bottom powder and the mixture of flour to being scattered in spray room are reclaimed, the mixture carries out the spraying of step c as flour after being well mixed with new flour, wherein, the bottom powder of recovery and the mixture of flour account for the 0-30% of step c powder gross masses.
4. a kind of method of high-velocity spray aluminium section bar as claimed in claim 2, it is characterised in that the pretreatment in step a includes：Sour oil removing, washing, alkaline etching, washing, neutralization, washing, sour degreasing, pure water is washed, Passivation Treatment, pure water are washed, toasted；Wherein, it is 150-220g/L, alkaline etching concentration 15-25g/L that acid removes oil concentration, neutralizes concentration 150-220g/L, sour degreasing total acidity 6-12, passivating solution slot index 6-15, pH value 1.6-2.2, and pure water washes electrical conductivity less than 100 μ s/cm after Passivation Treatment；Between 2-8 minutes, pretreatment post-passivation film thickness is between 400 microns to 1400 microns for the process time of each step.
5. a kind of method of high-velocity spray aluminium section bar as claimed in claim 2, it is characterised in that to restocking spraying interval time be 0-24 hours after step a pretreatments.
6. a kind of method of high-velocity spray aluminium section bar as claimed in claim 2, it is characterised in that in step b, bottom powder powder outlet quantity is adjusted to 5-20g/min, magnitude of voltage 60-90KV, gas output 4-5L/s, current value 0.4-0.7 μ A；In step c, flour powder outlet quantity 30-60g/min, magnitude of voltage 60-90KV, gas output 4-6L/s, current value 0.4-0.7 μ A, aluminium section bar gait of march is 4-6m/min.
7. a kind of method of high-velocity spray aluminium section bar as claimed in claim 2, it is characterized in that, described solidification Combined Processing refers to make coating of different nature occur physically or chemically to react by heating means, the heating-up temperature for solidifying Combined Processing is 235-270 DEG C, and solidification recombination time is 10-25 minutes.
8. a kind of method of high-velocity spray aluminium section bar as claimed in claim 2, it is characterised in that step b midsole powder sprays the groundwork thickness to be formed for 3-15 microns；Flour sprays the thickness to be formed for 20-80 microns in step c.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109277276A (en) * | 2018-09-19 | 2019-01-29 | 江苏海豚粉末新材料有限公司 | PVDF fluorine carbon dust coating process and PVDF fluorine carbon dust coating bottom powder |
| CN109365239A (en) * | 2018-09-19 | 2019-02-22 | 江苏海豚粉末新材料有限公司 | Coiled material powder coating and their application method, powdery paints and coiled material preparation method |
| CN109675779A (en) * | 2018-12-28 | 2019-04-26 | 广东兴发铝业（河南）有限公司 | A kind of processing method of fluorine carbon dust Spray-painted aluminum profile |
| CN110560308A (en) * | 2018-06-05 | 2019-12-13 | 广东兴发铝业（河南）有限公司 | Method and device for coating metal powder coating |
| CN114011672A (en) * | 2021-11-23 | 2022-02-08 | 上海金泛斯标识有限公司 | Aluminum profile spraying process |
| CN114558762A (en) * | 2021-11-26 | 2022-05-31 | 江苏伟业铝材有限公司 | Aluminum profile surface spraying method |
| CN117563810A (en) * | 2024-01-16 | 2024-02-20 | 江苏海德曼新材料股份有限公司 | Intelligent monitoring control system for fluorocarbon aluminum veneer manufacturing and spraying |
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| CN103847208A (en) * | 2012-11-28 | 2014-06-11 | 辉旭微粉技术（上海）有限公司 | PVDF composite film preparation method |
| CN104589760A (en) * | 2015-01-20 | 2015-05-06 | 广东坚美铝型材厂（集团）有限公司 | Aluminum alloy section and manufacturing method thereof |
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| CN110560308A (en) * | 2018-06-05 | 2019-12-13 | 广东兴发铝业（河南）有限公司 | Method and device for coating metal powder coating |
| CN109277276A (en) * | 2018-09-19 | 2019-01-29 | 江苏海豚粉末新材料有限公司 | PVDF fluorine carbon dust coating process and PVDF fluorine carbon dust coating bottom powder |
| CN109365239A (en) * | 2018-09-19 | 2019-02-22 | 江苏海豚粉末新材料有限公司 | Coiled material powder coating and their application method, powdery paints and coiled material preparation method |
| CN109675779A (en) * | 2018-12-28 | 2019-04-26 | 广东兴发铝业（河南）有限公司 | A kind of processing method of fluorine carbon dust Spray-painted aluminum profile |
| CN114011672A (en) * | 2021-11-23 | 2022-02-08 | 上海金泛斯标识有限公司 | Aluminum profile spraying process |
| CN114558762A (en) * | 2021-11-26 | 2022-05-31 | 江苏伟业铝材有限公司 | Aluminum profile surface spraying method |
| CN117563810A (en) * | 2024-01-16 | 2024-02-20 | 江苏海德曼新材料股份有限公司 | Intelligent monitoring control system for fluorocarbon aluminum veneer manufacturing and spraying |
| CN117563810B (en) * | 2024-01-16 | 2024-03-29 | 江苏海德曼新材料股份有限公司 | Intelligent monitoring control system for fluorocarbon aluminum veneer manufacturing and spraying |
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